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thumb|upright=1.1|right|Port Jackson, also referred to as Sydney Harbour, is a ria, or drowned river valley. The deeply indented shape of the ria reflects the dendritic pattern of drainage that existed before the rise in sea level that flooded the valley.
Article
12 sectionsContents
- Definitions
- Locations
- Europe
- Africa
- Asia
- Oceania
- North America
- South America
- Consequences
- See also
- References
- Further reading
thumb|upright=1.1|right|Port Jackson, also referred to as Sydney Harbour, is a ria, or drowned river valley. The deeply indented shape of the ria reflects the dendritic pattern of drainage that existed before the rise in sea level that flooded the valley.
A ria (; , feminine noun derived from , ) is a coastal inlet formed by the partial submergence of an unglaciated river valley. It is a drowned river valley that remains open to the sea.